From what I've read about both Lowes and Amazon, as well as my own personal experience with Amazon, it sounds like the same deal.
I opened the card in March 2015, and I've seen some hefty growth without trying. Started at $1700, received an automatic bump to $2400 a few months later, requested an increase on their website and got bumped to $3000 a few months thereafter, and I did the same more recently and got bumped to $5000. I didn't specify any amounts when I requested the increases, nor do I remember there being a field for me to do so. Honestly, with the amount I've put on that thing, my initial limit of $1700 would have been acceptable. It seems stupid easy to see your limit grow a ton with Synchrony.
I see some people groaning about how it's low quality credit and all... and it is. However, when it gets down to it, a dollar of credit is a dollar of credit as far as your utilization is concerned. If you pay off your card every month as I do, I don't see how it could hurt.
With that being said, I woudn't advise opening one of these cards just because you can get crazy limits with them. I personally don't open any card that I don't see myself using for anything other than the additional credit; I have the Amazon one because I'm a Prime member and that 5% discount is **bleep** useful. My utilization never exceeds 10% as it is, and it really doesn't matter much below that point. 